DP Chemistry (last assessment 2024)

Test builder »

Question 22N.2.sl.TZ0.3a

Select a Test
Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.2.sl.TZ0.3a
Level sl Paper 2 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
22N.2.sl.TZ0.3a

Consider the following reaction:

Cu2+ (aq) + Fe (s) → Fe2+ (aq) + Cu (s)

(a)

State the ground-state electron configuration for Fe2+.

[1]

Markscheme

1s22s22p63s23p63d6

OR

[Ar]3d6 ✔

Examiners report

Surprisingly poorly answered. Only 20% of the candidates recognized that the 4s electrons are lost before the 3d electrons and calculated the number of electrons in Fe2+ correctly. A small proportion of candidates did not list the subshells in the correct order.

Syllabus sections